We currently have GW7 on NetWare/NSS clusters. I plan on moving to GW8 with no clustering for simplicity.

Are there any known Novell benchmarks for WS08/NTFS vs Linux/EXT3?
I was leaning towards SLES, but every WS08 server we have installed for other applications are smoking fast. My PO has 2500 mailboxes with 1000 mailboxes used concurrently, 275 GB diskspace with over 2.5 millions files. EXT3 has inode limits and I'm concerned that I may starting hitting limits of this file system.

Any other advantages/disadvantages using either OS?